Dandy roll



my E?, 'W232- g@ J. H. LOWE DANDY ROLL Filed may 2 *1922 a LoNuoM? Patented duly l?, i923.

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narrar risica JAMES HENRY LOWE, OF BASTED, BORG GREEN, ENGLAND.

DANDY ROLL.

Application led May 2, 19522.r Serial No. 557,817.

T0 @ZZ whom it may concern:

Be it knoWn that l, JAMES a subject of the King of Great Bridge House, Basted,

county of Kent, England, have HENRY Lown,

Britain, of

Boro Green, in the invented a certain new and useful lmprovement in or Relating` to Dandy Rolls, of which thefollowing is a specifica-tion.

This invention relates to dandy rolls for paper making machines and has for its obliect to provide improvementsA therein or relating thereto, using mark may be avoided.

To this end and according to tion a Water mark whereby the necessity for a different roll for each different Water this invendevice is provided adapted to be detachably and interchangeably fitted to the surface of the roll.

the dandy roll and the water marl formed or provided with ample, device may each be coacting fastening Water mark device changeably secured. thereto.

devices by Forv eX- Which the is detachably and interln the accompanying drawings which shoiv tivo Ways of carrying out tion,

this invenlig. l is an elevation of a dandyroll having the invention applied thereto,

Figs. 2 and 3 are respectively a longitudinal section and face view drawn scale,

shoivn applied to the 4e is a face view the invention, and

Fig. 5 is a transverse section o lli/the construction of dandy to a larger of the improved Water mark device dandy roll in Fig. 1. of a modified form of f Fig. 4. roll carried out in accordance with this invention, as shown in Figs. l to 3, the Water mark device which in this case is shown as consisting of the name l H. Lowe rectangular tablet a of Wire Work similar to that employed for face or body of the dandy roll suitable foraminous metal shoivn as rectangular, this of .any suitable design.

mari tablet is detachably The fabric.

tablet a may be is formed upon a gauze or Wire the suror of other although said Water fastened to the surface of the dandy roll Z) by devices having the form of a. press button or the like c, the surface of the roll being fitted ivith one half of the fasteners placed to correspond With the other portions of the Water mark tablet a, Which fastenings may iently placed in any position edge or adjacent to the corner o be convenaround the f the tablet as shown, or as may be desired. yOther suit'- able fastening devices may be employed.

The water mark tablet a of Wire gauze or the like is received around its edges in a suitable frame c of wire or the like permanently mounted on or built into the surface of the roll. As shown in Figs. 2 and 3 the frame e may be arranged around the border of a recessed portion of the roll in Which the tablet a rests in order to bring the operative surface of the Water mark to the required level.

attached to Wire strips f f which are detachably secured, by press studs, or other fastenings c to the surface of the dandy roll b.

The surface of the dandy roll which is vto receive tablet a may be mutilated so as to bring the surface of the tablet flush with the remaining surface, for example, the surface may be countersunk, see Fig. 2, or a section of the surface of the dandy roll may be removed so as to bring the said tablet section or plate a flush with the surface of the roll.

lt will be seen that by the use of the detachable and interchangeable Water mark, or Water mark tablet, one of the improved dandy rolls may be used for any number of different Water marks, and thus the necessity and expense of employing a large number of rolls one for each Water mark is avoided, andany number of different Water marks may be used at the same time if desired, and further comparatively small quantities of paper may be made with one mark Without appreciable extra expense.

l/What l claim as my invention and desire to secure by Letters Patent is:-

l. A. Water mark device for dandy rolls comprising a tablet adapted to carry a Water mark and adapted to be fitted to the dandy roll, and tivo-part detachable fasteners carried by the back of said tablet and said roll whereby to removably attach 'the tablet to the dandy roll.

2. ln dandy rolls, a Water mark device mounted on a tablet of material similar to the surface of the dandy roll, a tablet re# ceiving frame on the dandy roll, and detachable fastenings for securing the Water mark tablet to the dandy roll in said frame.

' 3. In dandy rolls, a Water mark device mounted on a tablet of foraminous metal fabric, a tablet receiving frame on the dandy roll and'detaehable fastenings for securing the water mark tablet to thetdandy roll in said frame.

4. In dandy rolls, a water mark ,device mounted `on a tablet of material similar to the surface of the dandy roll, aI tablet receiving frame on the dandy roll and press buttonl fastenings for securing the water mark tablet to the dandy roll in said frame. 5. In dandy rolls water mark device mounted on a frame consisting of wire strips and detachable fastenings whereby said frame is attached to the dandyroll.

i 6. The combination with a dandy roll and a detachable tablet carrying a water mark device wherein the dandy roll is mutilated at` that'l portion which is to receive thewater mark tablet whereby the vsaid water mark tablet may be surface of the brought level with the surrounding surface 2O of the roll. y

JAMES HENRY LOWE. 

